I returned to my office and gazed in horror at a blank console!
After restarting everything the previous day I had noticed a faint burning smell ... But I put it down to the fact that maybe the power supply in the main server was a bit upset with the stress of the previous day.
And it was more than a little stressed ... The power supply threw in the towel at 0405 this morning. (According to the logfiles on my primary DNS that was when it died).
This was exactly the same time as the backups!
I went out and purchased a new power supply ... The server started up and went through the BIOS checks ... then it failed to fix the hard drives!.
I had to leave the office ... So I left fsck running ... and muttered a silent prayer to the almighty Google! (to whom we all pray, alleluia!)
When I returned eight hours later, I discovered that everything was Ok!
Can't believe that I managed to survive this one. I must do something about a UPS!